Offline Tool
Call Sign Format Checker
Validates common US call sign structure — not a substitute for FCC ULS license lookup.
Check US amateur call sign format before logging contacts or filing paperwork. Offline validator. Works offline after your first visit.
Validates common US call sign structure — not a substitute for FCC ULS license lookup.
When your callsign appears in FCC ULS — often within a few days of the VE session.
KI4TQN is a ham radio, GMRS, and emergency communications hub from East Tennessee — free tools, local reference data, YouTube-aligned guides, and consulting for property owners. Use this map to find your lane.
Pick a path: FCC-licensed GMRS, ham exam study, FRS, Meshtastic, just licensed, emcomm volunteer, or property owner.
113 offline browser tools plus step-by-step deployment workflows. Install the site as a PWA for field use.
Tri-Cities, Erwin / Unicoi (I-26), NETNRC linked repeaters, nets, HF listening, go-bag sheets, and ARES/RACES context.
Blog, videos, downloads, antenna reference, and curated radio links — tied to the YouTube channel.
Paid emergency communications consulting for estates, ranches, and remote properties — plus contact and newsletter.